:root {
            --primary: #1a1a2e;
            --accent: #e94560;
            --gold: #f39c12;
            --bg: #f5f0e8;
            --text: #2d3436;
            --card-bg: #ffffff;
            --radius: 12px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--gold);
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #16213e 100%);
            padding: 16px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -1px;
            background: linear-gradient(45deg, var(--gold), #ff6b6b);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            transform: scale(1.02);
        }
        .header-nav ul {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
        }
        .header-nav ul li a {
            color: #e0e0e0;
            padding: 8px 14px;
            border-radius: 8px;
            font-weight: 500;
            font-size: 0.92rem;
            display: block;
            transition: all 0.3s ease;
        }
        .header-nav ul li a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--gold);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 10px;
        }
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid #e8e0d5;
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb-wrap ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb-wrap ol li+li::before {
            content: "»";
            margin-right: 6px;
            color: #aaa;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding: 28px 0;
        }
        @media(min-width:992px) {
            .main-grid {
                grid-template-columns: 1fr 300px;
            }
        }
        article {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        h1 {
            font-size: 2.3rem;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.2;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        h2 {
            font-size: 1.7rem;
            color: var(--primary);
            margin: 40px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid #eee;
        }
        h3 {
            font-size: 1.25rem;
            color: #2c3e50;
            margin: 26px 0 10px;
        }
        h4 {
            font-size: 1.05rem;
            color: #444;
            margin: 18px 0 8px;
            font-style: italic;
        }
        p {
            margin-bottom: 14px;
        }
        .last-updated {
            color: #888;
            font-size: 0.85rem;
            margin-bottom: 18px;
        }
        .lead {
            font-size: 1.1rem;
            color: #444;
            border-left: 4px solid var(--gold);
            padding-left: 16px;
            background: #fdf9f3;
            padding: 12px 16px;
            border-radius: 0 8px 8px 0;
            margin: 18px 0;
        }
        .info-box {
            background: #eef4ff;
            border-radius: 10px;
            padding: 16px;
            margin: 18px 0;
            border-left: 4px solid #4a90d9;
        }
        .tip-box {
            background: #f0fdf4;
            border-radius: 10px;
            padding: 16px;
            margin: 18px 0;
            border-left: 4px solid #22c55e;
        }
        .warning-box {
            background: #fef2f2;
            border-radius: 10px;
            padding: 16px;
            margin: 18px 0;
            border-left: 4px solid #dc2626;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 18px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.92rem;
        }
        table th,
        table td {
            border: 1px solid #ddd;
            padding: 10px 12px;
            text-align: left;
        }
        table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        table tr:nth-child(even) {
            background: #f8f6f3;
        }
        .figure {
            margin: 22px 0;
            text-align: center;
        }
        .figure img {
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
        }
        .figure figcaption {
            font-size: 0.85rem;
            color: #777;
            margin-top: 8px;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }
        .widget {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        .widget h3 {
            font-size: 1.1rem;
            border-bottom: 2px solid var(--gold);
            padding-bottom: 6px;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .widget ul {
            list-style: none;
        }
        .widget ul li {
            margin-bottom: 8px;
            padding-left: 16px;
            position: relative;
        }
        .widget ul li::before {
            content: "> ";
            color: var(--gold);
            font-weight: bold;
            position: absolute;
            left: 0;
        }
        .widget ul li a {
            font-size: 0.92rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        .search-form input[type="text"]:focus {
            border-color: var(--accent);
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 16px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: var(--accent);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .star-input {
            display: flex;
            gap: 4px;
            font-size: 1.4rem;
            color: #ddd;
            cursor: pointer;
        }
        .star-input i.active {
            color: var(--gold);
        }
        .comment-form textarea {
            width: 100%;
            min-height: 90px;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.92rem;
            margin-bottom: 10px;
            resize: vertical;
        }
        .comment-form input[type="email"],
        .comment-form input[type="text"] {
            width: 100%;
            padding: 10px 12px;
            border: 2px solid #ddd;
            border-radius: 8px;
            margin-bottom: 10px;
            font-size: 0.92rem;
        }
        .btn {
            background: linear-gradient(135deg, var(--accent), #c81e45);
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 0.95rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(233, 69, 96, 0.3);
        }
        .site-footer {
            background: var(--primary);
            color: #ccc;
            padding: 32px 0 16px;
            margin-top: 40px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media(min-width:768px) {
            .footer-inner {
                grid-template-columns: 2fr 1fr;
            }
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 16px;
            border-radius: 8px;
            border-left: 3px solid var(--gold);
        }
        friend-link a {
            color: var(--gold);
            margin-right: 12px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
            margin-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #999;
        }
        @media(max-width:768px) {
            .header-nav {
                display: none;
                width: 100%;
            }
            .header-nav.show {
                display: block;
            }
            .header-nav ul {
                flex-direction: column;
                padding-top: 10px;
            }
            .hamburger {
                display: block;
            }
            article {
                padding: 18px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
        }
        .toc {
            background: #f9f6f2;
            border-radius: 10px;
            padding: 16px 20px;
            margin: 18px 0;
            border: 1px solid #e8ddd0;
        }
        .toc ul {
            list-style: none;
        }
        .toc>ul>li {
            font-weight: 600;
            margin: 6px 0;
        }
        .toc>ul>li>ul {
            font-weight: 400;
            padding-left: 18px;
        }
        .toc a {
            color: var(--text);
        }
        .toc a:hover {
            color: var(--accent);
            text-decoration: none;
        }
        .keywords-row {
            margin-top: 28px;
            padding-top: 18px;
            border-top: 1px solid #eee;
        }
        .keywords-row span {
            display: inline-block;
            background: #eee;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.82rem;
            margin: 4px;
            color: #555;
        }